Female vocals

There are plenty of women singers who do not in the slightest resemble jazz, Norah Jones, or Diana Krall, but who actually ROCK. 

I think at some point, someone said that a female vocal was a good source in “testing” the fidelity of an audio system, and it stuck.  
There seems to be now some weird subculture with audio nerds where vocals by a female are weirdly fetishized. 
There are so many damn threads about “female vocals.”  
I don’t get it.  
I think the frequencies the typical female voice produces may cause one to feel they can more easily dial-in the finer points of their home audio.  
Or something. I don’t know.  
Maybe because the typical male voice produces lower frequencies, it makes analysis of an audio system’s fidelity…messier(?)…than if it was done with a female vocal?  
Kind of just guessing at this point. 
I like the human voice.  
Gender got nuttin’ ta do widdit.

After I heard Margo Timmins/Cowboy Junkies covering "Sweet Jane" on Natural Born Killers, I was hooked.

I've not seen Vanessa Fernandez mentioned. This SACD sounds wonderful on a really good system:

https://youtu.be/3Omy_xI40Bo

And for classic rockers, also in SACD:

https://youtu.be/J-Rl8-tXCf0

BTW, if you want a sampling of the various female artists, this gives quite a variety (double CD) and they are really cheap on the bay.